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Validation of numerical prediction of dynamic derivatives: The DLR-F12 and the Transcruiser test cases

Mialon, Bruno and Khrabrov, Alex and Ben Khelil, Salua and Hübner, Andreas-René and Da Ronch, Andrea and Badcock, Ken and Cavagna, Luca and Eliasson, Peter and Zang, Mengmeng and Ricci, Sergio and Jouhaud, Jean-Christophe and Rogé, Gilbert and Hitzel, Stephan and Lahuta, Martin (2011) Validation of numerical prediction of dynamic derivatives: The DLR-F12 and the Transcruiser test cases. Progress in Aerospace Sciences, 47 (8), pp. 674-694. Elsevier. doi: 10.1016/j.paerosci.2011.08.010. ISSN 0376-0421.

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Abstract

The dynamic derivatives are widely used in linear aerodynamic models in order to determine the flying qualities of an aircraft: the ability to predict them reliably, quickly and sufficiently early in the design process is vital in order to avoid late and costly component redesigns. This paper describes experimental and computational research dealing with the determination of dynamic derivatives carried out within the FP6 European project SimSAC. Numerical and experimental results are compared for two aircraft configurations: a generic civil transport aircraft, wing-fuselage-tail configuration called the DLR F12 and a generic Transonic CRuiser (TCR), which is a canard configuration. Static and dynamic wind tunnel tests have been carried out for both configurations and are briefly described within this paper. The data generated for both the DLR-F12 and TCR configurations includes force and pressure coefficients obtained during small amplitude pitch, roll and yaw oscillations whilst the data for the TCR configuration also includes large amplitude oscillations, in order to investigate the dynamic effects on nonlinear aerodynamic characteristics. In addition, dynamic derivatives havebeen determined for both configurations with a large panel of tools, from linear aerodynamic (Vortex Lattice Methods) to CFD (unsteady Reynolds-Averaged Navier-Stokes solvers). This work confirms that an increase in fidelity level enables the dynamic derivatives to be calculated more accurately. Linear aerodynamics (VLM) tools are shown to give satisfactory results but are very sensitive to the geometry/mesh input data. Although all the quasi-steady CFD approaches give comparable results (robustness) for steady dynamic derivatives, they do not allow the prediction of unsteady components for the dynamic derivatives (angular derivatives w.r.t. time): this can be done with either a fully unsteady approach (with a time-marching scheme) or with Frequency Domain solvers, both of which provide comparable results for the DLR-F12 test case. As far as the canard configuration is concerned; strong limitations for the linear aerodynamic tools are observed. A key aspect of this work are the acceleration techniques developed for CFD methods, which allow the computational time to be dramatically reduced while providing comparable results

Item URL in elib:https://elib.dlr.de/72009/
Document Type:Article
Additional Information:Available online: 17. September 2011
Title:Validation of numerical prediction of dynamic derivatives: The DLR-F12 and the Transcruiser test cases
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Mialon, BrunoONERAUNSPECIFIED
Khrabrov, AlexTsAGIUNSPECIFIED
Ben Khelil, SaluaONERAUNSPECIFIED
Hübner, Andreas-RenéAndreas.Huebner (at) dlr.deUNSPECIFIED
Da Ronch, AndreaUniversity of LiverpoolUNSPECIFIED
Badcock, KenUniversity of LiverpoolUNSPECIFIED
Cavagna, LucaFOIUNSPECIFIED
Eliasson, PeterFOIUNSPECIFIED
Zang, MengmengKTHUNSPECIFIED
Ricci, SergioPolitecnico di MilanoUNSPECIFIED
Jouhaud, Jean-ChristopheCERFACSUNSPECIFIED
Rogé, GilbertDassault-AviationUNSPECIFIED
Hitzel, StephanEADS MASUNSPECIFIED
Lahuta, MartinVZLUUNSPECIFIED
Date:17 September 2011
Journal or Publication Title:Progress in Aerospace Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:47
DOI :10.1016/j.paerosci.2011.08.010
Page Range:pp. 674-694
Publisher:Elsevier
ISSN:0376-0421
Status:Published
Keywords:dynamic derivatives, DLR-F12, Transonic Cruiser, Vortex Lattice Methods, unsteady Reynolds-Averaged Navier-Stokes
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Hübner, Andreas-Rene
Deposited On:24 Jan 2012 09:48
Last Modified:31 Jul 2019 19:33

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